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SDSS J1038+4849 Smiling lens , 


SDSS J1038+4849 Smiling lens
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SDSS J1038+4849 Smiling lens

Technical card

Imaging telescopes or lenses:CELESTRON Edge HD 800

Imaging cameras:Atik 460ex

Mounts:Sky-Watcher EQ8

Guiding telescopes or lenses:CELESTRON Edge HD 800

Guiding cameras:Starlight Xpress Lodestar-C

Focal reducers:Celestron EdgeHD 8 0.7x Reducer

Software:Photoshop CCPHD guidingNeat Image


Accessory:Starlight Xpress OAGStarlight Xpress SX USB Filter Wheel 5x2"

Dates:March 25, 2017

B: 14x600"
G: 16x600"
L: 158x600"
R: 16x600"

Integration: 34.0 hours

Avg. Moon age: 26.73 days

Avg. Moon phase: 8.59%

Basic astrometry details job: 1531553

RA center: 10h 38' 42"

DEC center: +48° 49' 19"

Pixel scale: 0.621 arcsec/pixel

Orientation: 310.193 degrees

Field radius: 0.248 degrees

Resolution: 2390x1594


After seeing beautiful images of this objet from Josh Smith and Detlef Hartmann, I had to try it myself. My image is a bit disappointing but I could not convince myself to throw away all that exposure time.

The two eyes of the smiling face are galaxies 4.5 billions light years from Earth. Their strong gravitationnal field bends space-time and distort light coming from galaxies behind.

I included an image from the Hubble Space Telescope for comparison.



License: Attribution-NonCommercial-ShareAlike Creative Commons

Sky plot

Sky plot


SDSS J1038+4849 Smiling lens ,